Valve Spring Kit. Fits Big Twin 1948-1984. .470in. Lift.

Note: Maximum Recommended Lift = .470"

* High Performance Spring Kit

* Silicon & Vanadium alloy spring wire

* Increased travel before coil bind

* Complete Kit includes: springs, retainers, keepers & lower collars

* Replaces OEM # 18202-82

* Replaces OEM # 18205-57

* Replaces OEM # 18222-48A

Tech Tips:-

* Rocker box clearance must be checked

* Spring travel must be checked

* Valve timing must be accurate

** Over revving will lead to pre-mature failure of Valve Springs & collars.